If `f(x)=sqrtx(x > 0) and g(x)=x^2-1` are two real functions, find `fog and gof` is `fog=gof ?`

Explanation

To solve the problem, we need to find the compositions of the functions \( f \) and \( g \), specifically \( f(g(x)) \) and \( g(f(x)) \), and then determine if they are equal.

### Step 1: Identify the functions
We have:
- \( f(x) = \sqrt{x} \) for \( x > 0 \)
- \( g(x) = x^2 - 1 \)

### Step 2: Find \( f(g(x)) \)
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